Evonik Industries, Germany-based producer of high performance polymers, has recently unveiled its highly wear resistance VESTAKEEP® PEEK powder coatings to coat metals. The company recently concluded an agreement with IBEDA Sicherheitsgeräte und Gastechnik GmbH & Co. KG to offer a complete solution for coatings applied by the flame-spray process. The mobile IBEDA plastic flame-spraying system F311 FX-S makes it possible to coat large work pieces on site inexpensively and efficiently, without an oven. According to the company, VESTAKEEP® PEEK coatings applied with flame spray process yield extremely wear-resistant surfaces with outstanding chemical resistance. VESTAKEEP® is hydrolytically stable, with a long-term thermal stability of 260°C (500°F) which make it an ideal material for use in such industries as medical technology, aeronautics, automotive, oil, and power.
Flame spraying, developed early in the last century, is one of many types of thermal spraying processes. In this process, the combustion of a gas/oxygen mixture generates the thermal energy to melt the powder and warm the surface of the substrate. A carrier gas-normally compressed air-serves as the medium for transporting the melted particles to the substrate surface. The advantages of this process include low investment costs and the option of coating large parts on site, without an oven. VESTAKEEP® 2000 FP is said to be the perfectly suited for this application because it has a sufficiently low melt viscosity.